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. Author manuscript; available in PMC: 2015 Jul 20.
Published in final edited form as: Spine (Phila Pa 1976). 2012 Apr 1;37(7):612–622. doi: 10.1097/BRS.0b013e318228f32d

Table 1.

HIV Infected and Uninfected Study Patients at Baseline

HIV Infected (n=40,038) Uninfected (n=79,039) P value

Age (years) Mean (SD) 46.3 (10.2) 46.6(10.3) <0.001
Gender Male 39,102 (98%) 77,185 (98%) 0.951
Race White 15,019 (38%) 30,927 (39%) <0.001
African American 19,340 (48%) 36,978 (47%)
Hispanic 2,985 (7.5%) 6,019 (7.6%)
Other 2,694 (6.7%) 5,115 (6.5%)
Comorbidities Alcohol abuse 6,456 (16%) 11,496 (15%) <0.001
Atrial fibrillation 308 (0.8%) 793 (1.0%) <0.001
CAD 1,422 (3.6%) 4,861 (6.2%) <0.001
Cancer 2,035 (5.1%) 2,554 (3.2%) <0.001
CHF 647 (1.6%) 1,299 (1.6%) 0.735
Cirrhosis 418 (1.0%) 474 (0.6%) <0.001
COPD 1,733 (4.3%) 3,129 (4.0%) 0.003
Depression, major 2,651 (6.6%) 4,625 (5.9%) <0.001
Diabetes 2,926 (7.3%) 9,640 (12%) <0.001
Drug abuse 7,484 (19%) 9,827 (12%) <0.001
Hepatitis B, chronic 1,191 (3.0%) 302 (0.4%) <0.001
Hepatitis C 3,716 (9.3%) 2,354 (3.0%) <0.001
Hypertension 7,020 (18%) 21,039 (27%) <0.001
Hyperlipidemia 2,306 (5.8%) 10,666 (13%) <0.001
Osteoarthritis 1,059 (2.6%) 5,380 (6.8%) <0.001
PTSD 1,896 (4.7%) 6,120 (7.7%) <0.001
PVD 412 (1.0%) 1,050 (1.3%) <0.001
Renal insufficiency 1,621 (4.1%) 1,325 (1.7%) <0.001
Schizophrenia 1,367 (3.4%) 4,880 (6.2%) <0.001
Stroke 628 (1.6%) 1,349 (1.7%) 0.080
TIA 75 (0.2%) 181 (0.2%) 0.146
cART 20,997 (52%) n/a n/a
BMI, kg/m2 <18.5 2,464 (5.0%) 1,052 (1.1%) <0.001
18.5–24.9 19,834(48%) 20,324 (22%)
25–29.9 12,590 (33%) 29,850 (37%)
≥30 5,150 (14%) 27,813 (40%)
Hemoglobin, g/dl >12 30,658 (77%) 72,920 (92%) <0.001
10–12 6,393 (16%) 4,660 (5.9%)
<10 2,987 (7.5%) 1,458 (1.9%)
Albumin, g/dl ≥3.5 27,393 (68%) 69,499 (88%) <0.001
<3.5 12,645 (32%) 9,540 (12%)
CD4 cell count, cells/mm3 ≥ 500 9,748 (24%) n/a n/a
350 – 499 7,303 (18%) n/a
200 – 349 8,640 (22%) n/a
50 – 199 8,807 (22%) n/a
<50 5,540 (14%) n/a
Viral load, copies/ml <500 11,154 (28%) n/a n/a
≥ 500 28,884 (72%) n/a

SD = Standard deviation; CAD = Coronary artery disease; CHF = Congestive heart failure; COPD = chronic obstructive pulmonary disease; PTSD = post-traumatic stress disorder; PVD = peripheral vascular disease; TIA = Transient ischemic attack

cART = Combination anti-retroviral therapy

BMI = Body mass index